1 /* Copyright (C) 1995-2022 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
17
18 #include <errno.h>
19 #include <termios.h>
20 #include <sys/ioctl.h>
21 #include <sysdep-cancel.h>
22
23 /* Wait for pending output to be written on FD. */
24 int
__libc_tcdrain(int fd)25 __libc_tcdrain (int fd)
26 {
27 /* With an argument of 1, TCSBRK for output to be drain. */
28 return SYSCALL_CANCEL (ioctl, fd, TCSBRK, 1);
29 }
30 weak_alias (__libc_tcdrain, tcdrain)
31